Re: MBCS character code support

[Katayama Hirofumi MZ]

You can convert UTF-8 to Shift_JIS by the following code.


/* Linux, FreeBSD or UNIX */
#include <iconv.h>
iconv_t g_icUTF8toSJIS;

char *convert_utf8_to_sjis(char *in)
{
    char *out, *p_in, *p_out,
    size_t in_size, out_size;

    in_size = strlen(in);
    out_size = in_size;
    out = (char *)malloc(out_size + 1);
    if (out == NULL)
        return NULL;

    p_in = in;
    p_out = out;
    iconv(g_icUTF8toSJIS, &p_in, &in_size, &p_out, &out_size);
    *p_out = 0;

    return out;
}


int main(void)
{
    char *out;
    g_icUTF8toSJIS = iconv_open("UTF-8", "SJIS");
    if (g_icUTF8toSJIS == (iconv_t)-1) {
        // error
    }
    ...
    out = convert_utf8_to_sjis(...);
    ...
    free(out);
    ...

    iconv_close(g_icUTF8toSJIS);
    return 0;
}

/* Windows */
#include <windows.h>

char *UTF8toSJIS(char *utf8)
{
    char *wide, *sjis;
    int size;

    size = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, 0, 0);
    wide = (char *)malloc((size + 1) * sizeof(WCHAR));
    if (wide == NULL)
        return NULL;
    MultiByteToWideChar(CP_UTF8, 0, utf8, -1, wide, size);

    size = WideCharToMultiByte(CP_ACP, 0, wide, -1, 0, 0, 0, 0);
    sjis = malloc(size * 2 + 1);
    if (sjis == NULL) {
        free(wide);
        return NULL;
    }

    WideCharToMultiByte(CP_ACP, 0, wide, -1, sjis, size, 0, 0);
    free(wide);

    return sjis;
}

int main(void)
{
    char *out;
    ...
    out = UTF8toSJIS(...);
    ...
    free(out);
    ...
    return 0;
}